DYADIC GREEN'S FUNCTION IN PLANARLY AND CYLINDRICALLY MULTILAYERED GYROELECTRIC CHIRAL MEDIA

Abstract

The electromagnetic fields in an unbounded gyroelectric chiral media are first derived by utilizing the electric-type dyadic Green's functions in terms of the vector wave functions in cylindrical coordinates. The results are then extended to the bounded materials, i.e. in planarly and cylindrically multilayered gyroelectric chiral media. By considering the fields in each layer as a superposition of the direct wave and multiple scattered waves, a complete eigenfunction expansion of the more general representation is obtained as compared with the published work. The coefficients of the scattering dyadics are determined from the boundary conditions at each interface. These coefficients are greatly expressed in a compact recurrence matrices. Further analysis includes the formulation of those coefficients at which the current source is impressed in the first, the intermediate and the last layers, respectively. Thus, the general representation of the dyadic Green's functions provides a key to many practical application fields of physics, for instance the radiation from sources and propagation of waves in composite materials.